409791419 has 4 divisors (see below), whose sum is σ = 419321496. Its totient is φ = 400261344.

The previous prime is 409791401. The next prime is 409791439. The reversal of 409791419 is 914197904.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409791419 is a prime.

It is a super-2 number, since 2×409791419² = 335858014172067122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 409791419.

It is not an unprimeable number, because it can be changed into a prime (409791439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764974 + ... + 4765059.

It is an arithmetic number, because the mean of its divisors is an integer number (104830374).

Almost surely, 2^409791419 is an apocalyptic number.

409791419 is a deficient number, since it is larger than the sum of its proper divisors (9530077).

409791419 is an equidigital number, since it uses as much as digits as its factorization.

409791419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9530076.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 409791419 is about 20243.3055354110. The cubic root of 409791419 is about 742.7698839409.

The spelling of 409791419 in words is "four hundred nine million, seven hundred ninety-one thousand, four hundred nineteen".